公开(公告)号：US4917874A

公开(公告)日：1990-04-17

申请号：US211493

申请日：1988-06-24

申请人： Atul C. Sheth ,  William A. Butler

发明人： Atul C. Sheth ,  William A. Butler

IPC分类号： B01D53/50 ,  C01B17/96 ,  C01D5/16

CPC分类号： C01D5/16 ,  B01D53/501 ,  C01B17/96

摘要： Alkali metal sulfates are converted to a sulfur-free form by dissolving the alkali metal sulfate in water to produce an aqueous solution containing alkali metal ions and sulfate ions at a pH below about 8, and then passing the solution through a weak base, anion exchange resin having bicarbonate ions associated therewith that exchange with the sulfate ions so that the sulfate ions become associated with the resin and the bicarbonate ions become associated with the alkali metal ions in the solution. The resin can be regenerated to the bicarbonate form by treatment with an ammonium hydroxide solution followed by contact with carbon dioxide and the regeneration by-products are commercially useful.

摘要翻译： 碱金属硫酸盐通过将碱金属硫酸盐溶解在水中而形成无硫形式，以在低于约8的pH下产生含有碱金属离子和硫酸根离子的水溶液，然后使溶液通过弱碱，阴离子交换 具有与其结合的碳酸氢根离子的树脂与硫酸根离子交换，使得硫酸根离子与树脂相关联，并且碳酸氢根离子与溶液中的碱金属离子相关联。 通过用氢氧化铵溶液处理然后与二氧化碳接触可将树脂再生成碳酸氢盐形式，再生副产物在商业上是有用的。

公开(公告)号：US4324770A

公开(公告)日：1982-04-13

申请号：US189026

申请日：1980-09-22

申请人： Even Bakke

发明人： Even Bakke

IPC分类号： B01D53/50 ,  C01B17/62 ,  C01B17/96 ,  C01B17/00

CPC分类号： C01B17/96 ,  B01D53/501 ,  C01B17/62

摘要： A flue gas dry scrubbing process and system achieves higher sulfur dioxide removal efficiency with a better utilization of alkali reagent chemicals as well as increased dry product recovery performance using a combination of spray drying with an alkali reagent slurry and with a recycled stream comprising a mixture of unreacted alkali, sulfite and sulfate reaction products and flyash which directly contacts the sulfur dioxide-containing flue gas. Preferably the recycled mixture contacts the flue gas in the spray dryer. The invention utilizes a splitting method and a splitter apparatus wherein the particle product powder is separated into two fractions for recycling and for product disposal. The rate of splitting is fully adjustable over a wide range.

摘要翻译： 烟道气干燥洗涤过程和系统通过使用喷雾干燥与碱性试剂浆料的组合以及再循环的流将二氧化硫去除效率提高到更好地利用碱试剂化学品以及提高的干燥产物回收性能， 未反应的碱，亚硫酸盐和硫酸盐反应产物和直接接触含二氧化硫的烟道气的飞灰。 优选地，再循环混合物在喷雾干燥器中接触烟道气。 本发明利用分离方法和分流装置，其中将颗粒产物粉末分离成两部分用于再循环和用于产品处理。 分割速率可在宽范围内完全调节。

公开(公告)号：US4176163A

公开(公告)日：1979-11-27

申请号：US859764

申请日：1977-12-12

申请人： Hugh W. Nelson

发明人： Hugh W. Nelson

IPC分类号： B01D53/50 ,  C01B17/96 ,  C01D1/02 ,  C01D5/00 ,  C01B17/00 ,  B01D53/34

CPC分类号： C01D5/00 ,  B01D53/508 ,  C01B17/96 ,  C01D1/02

摘要： Sulfur oxides in the flue gases from a glass furnace are converted to sodium sulfate particles by introducing sodium oxide fume into the hot flue gases immediately downstream of the furnace. The fume is generated by forming a bed of carbonaceous material and sodium carbonate that is caused to react under hot reducing conditions. Sodium gas is thereby produced that burns above the bed to produce sodium oxide fume.

摘要翻译： 将来自玻璃熔炉的烟气中的硫氧化物通过将氧化钠烟雾引入到炉子下游的热烟道气中而转化为硫酸钠颗粒。 通过在热还原条件下形成碳质材料床和碳酸钠进行反应而产生烟雾。 由此产生在床上方燃烧产生氧化钠烟雾的钠气。